China will require wine spirit importers to post a deposit with customs starting Friday, in response to the European Union's decision to impose additional customs duties on Chinese-made electric cars. The EU's move, which has been opposed by Germany, is due to concerns about unfair competition from Chinese-made battery-powered vehicles. The cognac industry, which makes up a quarter of exports in value, is particularly affected by these trade tensions and is already struggling with a drop in sales and reduced vine plantation authorizations.